| 摘要 |
A method for making seamless, porous metal articles comprising (a) rotating a mold containing a stabilized suspension of a metal particulate at a rate and for a time such that the particulate is separated from the suspension and distributed on the interior wall of the mold, thereby forming a structure conforming to the interior wall of the mold, the rate of rotation being sufficiently high that at least 100 Gs of centrifugal acceleration is achieved at the interior wall of the structure, (b) drying the formed structure to provide a structure having green or unsintered strength, and (c) sintering the dried structure to remove volatile material and fuse the individual particles of the particulate to each other to form the seamless, porous metal article. Metal articles in accordance with the invention have substantially uniform diameters, thicknesses and pore strucotures, have Bubble Point ratios of 1.5 or less, and find particular use as filters. |
